Valves and valve actuation – Electrically actuated valve – With nonelectrical actuator
Patent
1989-03-14
1990-01-23
Rosenthal, Arnold
Valves and valve actuation
Electrically actuated valve
With nonelectrical actuator
123396, 123399, F16K 3104, F02D 902
Patent
active
048953431
ABSTRACT:
A throttle shaft provided with a throttle valve is rotatably supported on a support body and urged by a spring in a direction of closing the throttle valve. An electric driving device is connected to the throttle shaft to drive the shaft when energized and arranged so that when electric power is deenergized, connection to the throttle valve is released. A connecting member is connected to the throttle valve such that no displacement in relative angle therebetween can occur. A lever is connected to a manual operating member and is mounted such that a displacement in relative angle with the throttle shaft can occur. The lever is urged by a spring in a direction of closing the throttle valve. Stoppers are provided on the support body so as to define an angular displacement of the lever and of the connecting member on the side on which the throttle valve is closed. An electric connection device connects the connecting member and lever in the same phase when electric power is deenergized thereto and release the connected state therebetween when electric power is energized. Thereby, in the normal state, the throttle valve can be electrically controlled, and when an electric failure occurs, the throttle valve can be mechanically rotatively driven by connection between the lever and the connecting member.
REFERENCES:
patent: 4548176 (1985-10-01), Ishida et al.
patent: 4785782 (1988-11-01), Tanaka et al.
Honda Giken Kogyo Kabushiki Kaisha
Rosenthal Arnold
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